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LOCK.

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llivrrnn STaTns ARTHUR FLEISCHMANN, OF CHICAGO, ILLINOIS, ASSIGNOR FnTnNT Ormes.

TO MORITZ PLACE.

LOCK.

SPECIFICATION forming part of Letters Patent No. 579,388, dated March 23, 189'?. Application filed July 18,1896. Serial No. 599,654.` (No model.)

To all whom it may concern:

Be it known that I, ARTHUR FLEISCHMANN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Compound Locks, of which the following is a specification.

The object of my invention is to provide a simple, economical, and efficient compound lock; and the invention consists in the features, combinations, and details of construction hereinafter described and claimed.

In the accompanying drawings, Figure l is avertical side elevation of my improved lock with a portion of the case removed, showing the interior operative mechanism; Fig. 2, a transverse sectional view taken on line 2 of Fig. l, looking in the direction of the arrow; Fig. 3, a similar view taken on line 3 of Fig. 1; Fig. 4 a similar view taken on line 4E of Fig. l 5 Fig. 5, a detail view of one of the parts removed from the case; and Fig. 6, a vertical sectional elevation of a portion of the mechanism, taken on line 6 of Fig. l, looking in the direction of the arrow.

In the Yart to which this invention relates it is well known that it is very easy to open the ordinary latch by means of a caseknife when such latch is also used as the locking-bolt. My invention therefore is principally designed to overcome these objections by providing` a simple, economical, and eilicient compound lock, as will be hereinafter more fully set forth.

In constructing a lock in accordance with my invention I provide a case A of the desired size and shape and adapted to contain and hold the dierent parts in their operative positions. This ease may be made in any of the usual 1nanners-that is, provided with a face-plate a and cap a', which cap is secured to the main portion by means of the studs a2, a3, and a4 and ordinary screws. (Not shown.)

I provide a latch B, which, for convenience, I will term a primary locking-bolt. This latch is provided at its outer end with the usual curved surface l), and is held in place by means of a stud t', engaging with its slot b2. Interposed between the rear end of this primary locking-bolt and the case is a helically-coiled spring C, adapted to :normally hold the locking-bolt in its locking as shown clearly in Fig. l.

To make the lock more safe and secure against picking or opening by other than the regular means, I provide a second lockingbolt D, which is usually termed in ordinary locks the dead-bolt. In my improvements, however, it is a locking-bolt pure and simple, and not a dead-bolt in the strict sense of the word. Interposed between the rear end of the second lookin g-bolt and the case is a helically-coiled spring CZ, which acts to hold and return such locking-bolt toits normallylock ing position. In order to hold both lockingbolts in their unlocking position, I provide a latch composed of segmental pieces of metal h3 and CZ', having their free ends arranged to extend out into recesses b4 (Z2` in the faceplate. The `portions of these latches which extend into the case are provided with projections b5 b3, adapted to engage with notches h6 and d4, with which each bolt is provided, so that they may hold such bolts in their inoperative or unlocked positions.

It is often desirable, when the mechanism is in its unlocked position, that in opening position,

and closing a door, when leaving a room,V

the lock should be operated automatically,

yso as to throw both portions into locking position and prevent the opening of a door other than witha key. In order to accomplish this result, I provide the second locking-bolt with a notch or groove d5, arranged to be engaged by the free end of a retaining pawl or latch E, which is held therein by means of a small spring e. Arranged adjacent to this latch, so that one'of its free ends may contact the same, is a vibrating lever F, having its opposite free end slotted, as at f, and engaging a stud bl on the primary locking-bolt. The arrangement of parts is such that by moving the primary locking-bolt back to its unlocked position the upper end of the lever is vibrated inwardly and the lower end depressed, so as to contact and release the latch of the second locking-bolt fromengagement with such locking-bolt, so that such bolt is permitted to resume its normal locked position. This operation is performed every time the door is closed and the other mechanisms are not operated. In other Words,

IOO

this action is performed only when the primary locking-bolt is moved independently.

It is desirable to provide means by which the locking-bolts may be operated simultaneously or independently. To accomplish this result, I provide a compound sliding bar composed of a main portion G and a supplement-al sliding portion G', mounted thereon. The main portion is provided with upper and lower extending arms g g', arranged to contact pins bs d on each of the locking-bolts, so that when such slide is brought back to its inner limit of motion both of the bolts are also brought back, or when the second lockingbolt is brought back to it-s unlocked position. and held therein, as shown in Fig. l, the primary bolt may be operated. To operate this main sliding bar and the supplemental sliding bar also, I provide the ordinary turnbolt, but make it in two parts II II. The part II' is provided with a vibrating hub 7L at its inner end, and the turn-bolt II is provided with a vibrating hub h at its inner end. The vibrating hub h is arranged, as is clearly shown in Figs. 4L and 5, to contact the main sliding bar only, while the vibrating hub h contacts the supplemental slide only. The supplemental slide is mounted, like a saddle portion, on the main portion of the sliding bar, so that it may have at desired times free and independent or longitudinal movements. Each of the parts of the turnbolts are provided with knobs I I', knob I being preferably on theinside of the door, or in the room, and knob I on the outside of the room. Collars i' i" are inserted between the escutcheon i2 i3 and the door Z and act to hold the turn-bolts from longitudinal movement.

By turning the knob I, which is on the inside of the door, the vibrating hub h only is operated, and it acts to operate the main portion of the slidin g bar only, thus opening or unlocking both oi the bolts, if necessary. As the lever F is pivotally mounted on the main portion of the sliding` bar by means of a pin f', the relative position of such lever is not disturbed when the main portion is moved, so that the locking-bolt is allowed to remain in its latched position.

It is desirable also to iind means for locking the supplemental sliding bar, so that it cannot be operated from the outside or the parts placed in their unlocked position other than by the use of regular means. In order to hold this supplemental sliding bar in its latched position, I provide it with a notch g4 and arrange a latch or pawl K so that one of its free ends may engage with the notch of the supplemental sliding bar, as shown in Fig. l, and hold the same againsta backward or inward movement. In order to release such latch, however, I provide a key L of the desired shape or size, and the casing with an opening Z, through which such key may be inserted to Contact one of the free ends of the last-named latch, as shown in Fig. l, to raise its inner end and permit the parts to be operated by the turn-bolt II. The supplemental slide-bar is provided with a pin g5, arranged to operate in a recess Q6 of the main portion, so that when it reaches its limit of motion, as indicated in Fig. l, a further inward movement carries with it the main portion to operate the locking-bolts, the same as when the main sliding portion is operated independently. A spring IWI may be used or not, as desired, as shown in Fig. l, where it is interposed between the inner end of such main sliding bar and the case for the purpose of holding or returning the sliding bar to the position shown in Fig. l.

Vhile I have described my invention with more or less minuteness as regards details and as being embodied in certain precise forms, I do not desire to be limited thereto unduly any more than is pointed out in the claims. On the contrary, I contemplate all proper changes in form, construction, an d arrangement, the omission of immaterial elements, and the substitution of equivalents, as circumstances may suggest or necessity ren der expedient.

I claiml. In a compound lock, the combination of I a primary locking-bolt, and a second lockingbolt arranged to be placed in a locking position bythe movement of the primary lockingbolt, substantially as described.

2. In a compound lock, the combination of a primarylocking-bolt, a second locking-bolt, spring mechanism adapted to normally hold both of the locking-bolts in their locking position, latch mechanism arranged to hold the second locking-bolt in its unlocked position, and means interposed between the primary lockingbolt and the second locking-bolt whereby the second locking-bolt is released b v the movement of the primary locking-bolt, substantially as described.

3. In a compound lock, the combination of a primary lookin g-bolt, a second locking-bolt, spring mechanism for normally holding the locking-bolts in their locking position, a slide arranged to withdraw the bolts from their locking position, latch mechanism for holding the second locking-bolt in its unlocked position and a lever pivoted to the slide and engaged by the primary locking-bolt whereby the second bolt is released by the independent movement of the primary locking-bolt only and not disturbed when the primary locking-bolt is moved by the slide, substan tially as described.

e. I n a compound lock, the combination of a primary locking-bolt, a second locking-bolt, spring or similar mechanism for normally holding the locking-bolts in their locking position, latch mechanism for holding the second locking-bolt in its unlocked position, a compound slide arranged to withdraw the bolts from their locking position, a lever pivoted to the main portion of the slide and engaging with the latch mechanism and with IOO IIO

the primary bolt whereby the latch mechanism of the second bolt is released by the i11- dependent movement only of the primary bolt, latch mechanism for preventing the movement of the second portion of the compound slide, a knob and turn-bolt arranged to operate the main slide from one side of the door and the supplemental or second slide from the opposite side of the door, and key mechanism for releasing the latch of the sup- 1o pleniental slide, substantially as described.

ARTHUR FLEISCHMANN.

Vitnesses:

THOMAS F. SHERIDAN, THOMAS B. McGREG-on. 

